CHAPTER 6: HOMEOSTASIS DISORDERS

Question 1

General Adaptation Syndrome
- what is it
- stages

Answer 1

NONspecific stress response
Alarm Stage: emergency reaction, fight/flight, SNS stim
Resistance Stage: body attempts to move toward restoring homeostasis
Exhaustion Stage: stressor is prolonged, adaptation not successful, marks onset of diseases

Question 2

Neuroendocrine Response

Answer 2

coordinated release of neurohormones
- mobilization of energy
- sharp focus, awareness
- inc cerebral blood flow

Question 3

SNS Response: fight or flight

Answer 3

inc sympathetic activity in the brain
- inc alertness, HR, BP
- dec blood flow to skin, gut, kidney
- dilate pupils

Question 4

Chronic Stress Effects

Answer 4

• INC SNS and cortisol
• alt physio and psych function
• complications from reduced immune response

Question 5

PTSD Characteristics

Answer 5

intrusion (flashbacks/relive traumatic event)
avoidance (emotional numbing)
hyperarousal (inc irritability, difficulty concentration, sleep disturbance)